Secondary malignant neoplasm of bladder

This code signifies the presence of a malignant tumor in the bladder that originated from a primary cancer site elsewhere in the body and has spread to the bladder. It indicates metastatic disease to the bladder, not a primary bladder cancer.

Apply this code when documentation clearly states metastatic cancer to the bladder, secondary bladder malignancy, or bladder involvement from a primary tumor located in another organ. Supporting documentation includes pathology reports confirming metastatic cells in bladder tissue, or imaging reports and physician notes describing secondary bladder lesions.

• Always sequence the primary malignant neoplasm code before this secondary site code, unless the primary site is unknown or has been excised and is no longer being treated.
• Distinguish carefully between secondary malignant neoplasm of the bladder and primary malignant neoplasm of the bladder (e.g., C67.-).
• Do not use this code for direct extension of a contiguous tumor; this code is specifically for metastatic spread.